QUANTUM LOOP · Quantum Light Spectroscopy of Polariton Lasers

Quantum Light Spectroscopy of Polariton Lasers

Coherent sources of light are crucial and integral components of many of current day technologies with their applications in communications, sensing and biomedical fields. Lasers based on polaritons (light-matter quasi-particles) are envisaged to be energy efficient alternatives for such sources. However, devices which operate at room temperature based on this principle have remained elusive to the scientific community. The context of this project is to establish the essential photo-physical knowledge about emerging semiconducting materials which are potential candidates for such applications, via advanced optical spectroscopic techniques. One of the major objectives of this project was to investigate the multi-particle interactions in novel hybrid organic-inorganic perovskites in the context of their application in polariton based devices. In parallel, the project also attempted to develop new spectroscopic tools based on entangled-photon pairs which will provide unambiguous probe of the multi-body correlations in materials. Coherent nonlinear optical spectroscopies were employed on a variety of hybrid organic inorganic perovskites to obtain a comprehensive perspective on the nature and dynamics of excitons particularly in lower dimensional derivatives that host two-dimensional excitations. We have provided evidence for the ubiquitous role of the crystal vibrations in the excitonic characteristics and proposed exciton polaron model in these material systems. We also identified 2D perovskite architectures to create polariton lasers and embedded them within high quality microcavities. We have also developed theoretical and experimental tools based on entangled photon pairs to estimate many-body correlations in excitonic systems, which will be further developed in the future as alternative material probes.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз